Evidence map›Paper›PMID 33687974›Full record

ArticleJournal of neurology, neurosurgery, and psychiatry2021

DRB1-environment interactions in multiple sclerosis etiology: results from two Swedish case-control studies.

Anna Karin Hedström, Jan Hillert, Nicole Brenner, Julia Butt, Tim Waterboer, Pernilla Strid, Ingrid Kockum, Tomas Olsson, Lars Alfredsson

Open access · hybridAbstract read
In one paragraph

Article in Journal of neurology, neurosurgery, and psychiatry, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
1.4field-weighted citation impact, top 21% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

13 citing papers in PubMed, 15 citations in OpenAlex.

  1. Review
  2. Article
  3. Interaction between smoking andMultiple sclerosis (Houndmills, Basingstoke, England) · 2026
    Article
  4. Review
  5. Towards primary prevention of multiple sclerosis.Nature reviews. Neurology · 2026
    Review
  6. Review
  7. Article
  8. Article
  9. Article
  10. Review
  11. Review
  12. The Interaction between HLA-DRB1 and Smoking in Parkinson's Disease Revisited.Movement disorders : official journal of the Movement Disorder Society · 2022
    Article
  13. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 2 institutions in 2 countries.

Anna Karin HedströmDepartment of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden anna.hedstrom@ki.se.ORCID 0000-0002-6612-4749
Jan HillertDepartment of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden.
Nicole BrennerGerman Cancer Research Centre, Heidelberg, Germany.
Julia ButtGerman Cancer Research Centre, Heidelberg, Germany.
Tim WaterboerGerman Cancer Research Centre, Heidelberg, Germany.
Pernilla StridDepartment of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden.
Ingrid KockumDepartment of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden.
Tomas Olsson *Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden.
Lars Alfredsson *Karolinska Institute, Stockholm, Sweden.
Karolinska Institutet · SEGerman Cancer Research Center · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveWe aimed to investigate the influence of environmental risk factors for multiple sclerosis (MS) in different genetic contexts, and study if interactions between environmental factors and human leucocyte antigen (HLA) genes differ in magnitude according to heterozygocity and homozygocity for

methodsUsing population-based case-control studies (6985 cases, 6569 controls), subjects with different genotypes and smoking, EBNA-1 status and adolescent Body Mass status, were compared regarding MS risk, by calculating OR with 95% CI employing logistic regression. The interaction between different genotypes and each environmental factor was evaluated on the additive scale.

resultsThe effect of each

conclusionsThe strikingly increased MS risk among

Indexed as

AdolescentAdultAgedAllelesCase-Control StudiesFemaleGene-Environment InteractionGenetic Predisposition to DiseaseGenotypeHLA-DRB1 ChainsHumansMaleMiddle AgedMultiple SclerosisRegistriesSwedenHLA-DRB1 Chains

Identifiers

PMID33687974
PMCPMC8223646
OpenAlexW3134405430

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.